The appointment for each data centre covers review of concept designs, failure mode and effect analysis (FMEA), witness and certification of critical systems operations, detailed close out reports and lessons learnt reviews. The services provided by Waterman demonstrate that the operation of the energy centres, data rooms and network operations centres operate as their original design intention as defined in the Employers Requirements Brief. The final close out reports provide Ark with fully detailed information regarding the validation process that can be used for audit purposes, Ark client interfaces and technical reference material for operations staff.